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US 10,974,100 B2Granted
Racket and grommet
AssigneeYonex Kabushiki Kaisha
InventorsNaoto Ogawa, Masato Kawabata, Hitoshi Kato, Tsutomu Takahashi
Life of this patent
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Abstract
A racket includes: a grip; an annular frame; and a shaft coupling the grip and the frame together; wherein a projection is provided to an outer peripheral face on a leading end half of the frame in a predetermined range including a location of maximum curvature in a peripheral direction.
Claims2
A tennis racket comprising:
- a grip;
- an annular frame;
- a shaft coupling the grip and the frame together;
- wherein a projection is provided to an outer peripheral face on a leading end half of the frame in a predetermined range including a location of maximum curvature in a peripheral direction;
- wherein the projection has a width in the peripheral direction wider at a position at a central side of the projection in a thickness direction, which is orthogonal to a hitting face formed inside the frame, than at a position at an end side of the projection in the thickness direction;
- and
- wherein:
- a grommet is attached to an outer periphery of the frame;
- and the grommet includes a recess configured to fit together with the projection of the frame on a back face of the grommet, which is a side of the grommet opposing the frame, and includes a protrusion formed to correspond to the recess on a front face of the grommet, which is the opposite side to the back face.
6 more elements
A tennis racket comprising:
- a grip;
- an annular frame;
- a shaft coupling the grip and the frame together;
- wherein a projection is provided to an outer peripheral face on a leading end half of the frame in a predetermined range including a location of maximum curvature in a peripheral direction;
- wherein the projection has a width in the peripheral direction wider at a position at a central side of the projection in a thickness direction, which is orthogonal to a hitting face formed inside the frame, than at a position at an end side of the projection in the thickness direction;
- wherein a height of the projection is 0.5 mm or lower;
- and
- wherein:
- a grommet is attached to an outer periphery of the frame;
- and the grommet includes a recess configured to fit together with the projection of the frame on a back face of the grommet, which is a side of the grommet opposing the frame, and includes a protrusion formed to correspond to the recess on a front face of the grommet, which is the opposite side to the back face.
7 more elements
Dependencies are inferred from the claim text.